My 94 jeep cherokee sport with a five speed has been jerking violently through all gears from a dead stop. There are no codes showing anymore. I've replaced the tps, ignition switch, alternator, and starter. Giving further gas does not improve the situation. Pushing the clutch in and revving the motor there is no engine hiccup noises and it's not running rough. It idles normally, there is no unusual noises it just jerks violently. What could it be?

1 Answer

I had the exact same problem, The rear wheels have bushings that go out, they are only a few dollars. I changed that and it solved the problem. In addition I did change the throw out bearing and pilot bearing at the same time. Problem is now fixed

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Fuel filter clogged and or impurities in the fuel system.faulty or incorrectly gapped spark plugs.Fault in fuel electrical system.Defective spark plug wires. Faulty emission system components.Vacuum leaks at the throttle body intake manifold or vacuum hoses. I would first look at the fuel inline filters it sounds like this is the likely problem.

No check engine light on? If it jumps rapidly, then it can only be due to the transmission changing gears, or slipping clutches. Either way, there should be a fault code set in the PCM. You need to get it scanned first to know the fault code.

Here is an article I found talking about the Transmission.
The second generation Grand Cherokee: 1999-2004 Jeep WJ
The first Grand Cherokee was redesigned in 1999, for lower production cost and greater performance and reliability; it was Chrysler's first use of an electronic bus to replace individual wires throughout the body.

Jeep five-speed automatic transmission

An all-new, electronically-controlled transmission with five forward ratios including an alternate second gear ratio for improved performance for passing and better fuel economy is available with the V-8 only, and was designed specifically for Jeeps.

The transmission features unique characteristics such as a tall, 3.00:1 first gear that gives the driver better initial acceleration. Real-time driver adaptive shifting fine-tunes the shift pattern to the driver, while an alternate second gear ratio gives the driver five forward ratios. During acceleration, second gear has a ratio of 1.67. Depending on speed and throttle position, both this gear and an alternate 1.50 second gear ratio are available for kick-down operation, making the down-shift smoother. Its reverse gear ratio is equal to the first gear ratio, to allow for heavier loads.

Other features include three planetary gear sets that combine the widest range of gear ratios available in any transmission in its class. Combined with precise step selections, this brings smooth shifts and maximum power and optimal fuel economy.

The transmission is built at the Indiana Transmission Plant in Kokomo, Indiana, in an all-new 1.2-million square-foot (110,000 m2) facility.

Will the car move at all. If you put it in gear and let your foot off brake , does it move untill you touch gas , or does it jam up as soon as wheels start to turn. I am suspecting problem with diff.
Doubtfull about trans filter.